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// Copyright (c) 2011, Dr. Masroor Ehsan
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using System.Collections.Generic;
using MaxTrader.IntradayQuotes.Core;
using Rhino.Etl.Core;
using Rhino.Etl.Core.Operations;

namespace MaxTrader.IntradayQuotes.Etl
{
    internal class GenerateFilteredSnapshotOperation : AbstractOperation
    {
        private readonly AggregateStockSnapshot _stockSnapshot;

        public GenerateFilteredSnapshotOperation(AggregateStockSnapshot stockSnapshot)
        {
            _stockSnapshot = stockSnapshot;
        }

        public override IEnumerable<Row> Execute(IEnumerable<Row> rows)
        {
            foreach (var row in rows)
            {
                if (row != null)
                {
                    var quote = EtlAdapter.RowToQuote(null, row);
                    _stockSnapshot.Add(quote.Symbol, quote);
                }
                yield return row;
            }
        }
    }
}